Door-securing device



EEEEEEEEE ON DOOR SECURING DEVICE Reissued Apr. 21, 1931 UNITED STATES PATENT OFFICE ELLING ELLINGSON, OF SAN FRANCISCO, CALIFORNIA DOOR-SECURING' DEVICE Original No. 1,744,456, (lated January 21, 1930, Serial No. 247,217, iiled January 16, 1928. Application tor reissue filed February 3, 1931. Serial No. 513,210.

My invention relates to improvements in securing devices for doors and the like wherein a hasp mounted upon the jamb of a door is arranged to be moved to an inoperative 6 position folded against the jamb and extended to an operative position engaging the knob of the door to permit a limited opening of the door and at the same time secure the door against an unauthorized opening suticient to admit the entrance of a person through the door..

The primary object of my invention is to provide an improved door securing hasp.

Another object is to provide an improved device which may be folded to an inconspicuous inoperative position and which may be easily and quickly moved to operative position,

A further object is to provide an improved device of the character described which will permit a limited opening of a door for the purpose of ventilation or to permit observation ast the door, but which will eifeetually bar the door against further opening.

A still further object is to provide an improved device of simple and economical construction which may be easily applied in connection with a door.

The invention consists of the improved details of construction and arrangement disclosed in the drawings forming a part of the present-application wherein like characters of reference are used to designate similar parts throughout the specification and drawings, and in which Fig. 1 is a broken front elevation of a portion of a door and j amb, showing the applica.- tion of my improved securing device thereon;

Fig. 2 is a sectional view of the door and jamb showing my securing device in operative engagement with the knob, the door being in fully closed position; and

Fig. 3 is a View similar to Fig. 2 with the door moved to its limited open position.

Referring to the drawings, the numeral 1 is used to designate in general a door mounted adjacent a jamb 2 and provided with a door knob 3 of the ordinary form. My improved securing device consists of a knob engaging member 4 having a central aperture G arranged to permit the member 4 to be moved over the knob 3. A jamb plate 7 is secured upon the jamb 2 opposite the knob 3 by means of screws 8 or other suitable securing means.

The apertured member 4 is connected to the jamb plate 7 by means of links 9 and 10 hingedly connected to each other as at 11 and to the apertured member and the jamb plate respectively by hinge connections 12 and 13. A spring 14 is mounted upon the pintle of the hinge connection 13 and arranged to exert a normal pressure tending to move the link 10 to a position folded back away from the door 1 and against the jamb plate 7.

In operation, my improved securing device is mounted upon the jamb in a position directly opposite to the knob 3 and at a distance from the edge of the door such that when the apertured member 4 and links 9 and 10 are folded back in substantially parallel relation against the jamb as shown in full lines in Fig. 1 and in dotted lines in Fig. 2 of the drawings, the hasp will occupy an inconspicuous inoperative position clear of the edge of the door. To secure the door, the hasp is moved from its inoperative position and the apertured member 4 is moved over the knob 3 as indicated in dotted lines in Fig. 1 of the drawings. lVhen the hasp is now released the spring 14 tends to move the link 10 back toward its inoperative position, thereby pulling the apertured member 4 into engagement with the stem of the knob 3 as shown in yfull lines in Fig. 20j? the drawings. The tensionv of the spring holds vthe member 4 in engagement with the knob 3 and effectually prevents displacement of said member by a blow struck against the outer side of the door or knob.

If it is desired to open the door slightly, either for purpose of ventilation or to permit a person inside the door to observe persons or objects outside the door, the knob may be turned within the apertured member 4 and the door opened to the limited position shown/in Fig. 3 of the drawings. When thus opened, the door cannot be further opened by a person upon the outside, thereby barring the entrance of an unauthorized person even when the door is partially opened. The limited opening of the door also permits observation of a person seeking admission without unfastening the door to an extent such as to Yaford an opportunity to force an entry when the door is unlatched, thus aording safety to a person who otherwise might be overpowered by an intruder. It will be noted that the knob is readily turnable within the member 4 to permit the unlatching of the door without displacing the securing device, andalso that the member 4 is effectually held in operative engagement with the knob until intentionally released and moved from inside of the door to an inoperative position. The plurality of hinged links Vaffords compactness and insures a positive engagement with the knob While permitting a limited opening of the door.-

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. A door securing device comprising a hasp consisting of an apertured member arranged to be moved over the door knob of a door; a jamb plate arranged to be secured upon the door jamb adjacent the knob; a pair of links pivotally connected at their adjacent ends and pivotally connected at their opposite ends to the apertured member and thejamb plate respectively, saidlinks being movable. to proximate matching relation against said jamb plate to permit the apertured member to be folded back against the jamb into inoperative position, said links 5 also being adapted to beextended to permit said apertured member to ,be moved into engagement with the knob and permit a limited opening only of the door.

2. A door securing device comprising a hasp consisting of an apertured member arranged to be moved over the door knob of a door; a jamb plate arranged to be secured upon the door jamb adjacent the knob; a pair of links hingedly connected at adjacent ends and pivotally connected at their opposite vends to the apertured member and the j amb plate respectively, said llinks being movable to roximate matching relation against the am plate to permit the apertured member to be folded back against the j amb into inoperative position, said `links also vbeing i adapted to be extended to permit said apertured member to be moved into engagement with the knob and permit a limited opening only of the door; and means for normally moving the links in a direction' away from the knob.

3. A` door securing device comprising a hasp consisting of an apertured ymember arranged to be moved over the knob of a door; a jamb plate arran ed to be secured upon the door jamb adjacent the knob; linksy hingedly connected, between the apertured member and the jamb plate and arranged to permit the apertured member to be lfolded back against the jamb into inoperative position and to be extended into engagement with the knob, said links being arranged to permit a limited opening of the door; and a spring mounted in connection with the jamb plate and the adjacent lilik and normally exerting a pressure tending to movesaid link m a direction away from the knob.

4. A door securing device comprising the combination with the knob and jamb of a door, of a hasp comprising an apertured member arranged to be moved over the knob; a jamb plate secured upon the j-amb adjacent the knob; and a pair of links hingedly connected to each other and to the apertured member and sash plate to permit the apertured member to be folded back against the jamb into inoperative position and to be extended into engagement with the knob, said links being arranged to permit a limited opening of the door.

5. A door securing device compris-ing a hasp plate provided with an enlarged knob engaging portion having an opening therethrough of a diameter sufficient to pass over a door knob of ordinary size; and means hingedly connected to the hasp late and to a doo-r jamb adjacent to the or inary standard door knob of a door, said means being movable to extend the hasp plate over the knob with said knob received Within the opening of the plate whereby the door may be opened only a limited amount.

6. In a door securing device, a hasp plate having an opening of a size adapted toreceive an ordinary door knob therethrough and permit a relatively wide range of movement of the hasp plate relative to a stem connecting said knob to a door; and means hingedly connected to said plate and to a door jamb adjacent the vknob to hold said plate in alinement with the knob, said means being movable to permit movement of the plate into and out of engagement with the knob.

7. In a door securing device, the combination with a door provided with the usual doorl knob. and stem, of a hasp-plate having an openlng of a diameter suliiciently large to' pass over the knob and to afford a relatively wide range of movement transversely with respect to the stem of said knob; and link means hingedly connected at one end to the hasp plate and at the opposite end to a door j amb in alinement with said door knob, said means bein' movable to permit movement of the hasp plate onto and off from the knob, and also transversely relative to the stem when in engagement with the knob and stem, and also being movable to position the hasp idn flat proximate relation to the plane of the oor.

In witness whereof, I hereunto set" my sigl 

